M27 The Dumbbell Nebula in OIII (single 40 min exposure) (Terry Hancock)

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M27 The Dumbbell Nebula in OIII (single 40 min exposure)

Once again it was supposed to be clear all night last night but I had time to shoot just one single 40 min sub exposure before the clouds rolled in. I wouldn't normally post such a short exposure

but I was quite pleased with how this my first exposure using the Baader OIII turned out. Yes it's very noisy and there are visible artifacts but there was no dark, flat or bias subtracted.

Thanks for looking

All the Best & Clear Skies

Terry

Down Under Observatory

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Location: DownUnder Observatory, Fremont MI

Date of Shoot June 18th 2012

Exposure: 1 x 40 minute OIII unbinned

Camera: QHY9M monochrome CCD, cooled to -30C www.astrofactors.com

StarlightXpress Color Filter Wheel

Scope: Astronomy Technologies Astro-Tech 10" f/8 Ritchey-Chrétien astrograph

Astro Tech 2" Field Flattener.

Autoguided using QHY5 autoguider, StarlightXpress Ultra Slim Off Axis guider

Paramount GT-1100S German Equatorial Mount (with MKS 4000)

Image Aquisition software Maxim DL5

Processed with Photoshop CS5

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M27 The Dumbbell Nebula in OIII (single 40 min exposure)

M27 The Dumbbell Nebula in OIII (single 40 min exposure)

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M27 The Dumbbell Nebula in OIII (single 40 min exposure)

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